crawl4ai
unclecode/crawl4ai · Updated
Open-source web crawler and scraper for LLMs and AI agents: any website into clean, LLM-ready Markdown. Run it yourself, or use Crawl4AI Cloud with one key. Join our Discord https://discord.gg/VuxzM8mtf
unclecode/crawl4ai is a Python repository in the MCP & Tooling category with 86,509 stars and 9,002 forks on GitHub, released under the Apache-2.0 license, last updated today.
How to install crawl4ai in your AI client
Setup for Claude Code, Claude Desktop, Cursor, Codex, Windsurf, Cline and VS Code — copy-paste ready.
How to install crawl4ai in Claude CodeAnthropic's agentic CLI
Clone & open
bashgit clone https://github.com/unclecode/crawl4ai.git cd crawl4ai claudeLet Claude read it
Ask “/init” to generate a CLAUDE.md, then have Claude explain, run, or extend the codebase. It reads files on demand.
How to install crawl4ai in Claude DesktopDesktop app (MCP config)
Clone the repository
bashgit clone https://github.com/unclecode/crawl4ai.gitOpen in your AI editor
Open the folder in your assistant and ask it to index the codebase, then reference files in chat.
How to install crawl4ai in CursorAI-first code editor
Clone & open in Cursor
bashgit clone https://github.com/unclecode/crawl4ai.gitIndex & chat
Open the folder — Cursor indexes it automatically. Use @Codebase in chat to ask about it or scaffold from it.
How to install crawl4ai in Codex CLIOpenAI coding agent
Clone
bashgit clone https://github.com/unclecode/crawl4ai.gitPoint Codex at it
Run codex in the repo root; add setup notes to AGENTS.md so the agent knows how to build & test.
How to install crawl4ai in WindsurfCodeium's agentic IDE
Clone & open
bashgit clone https://github.com/unclecode/crawl4ai.gitUse Cascade
Windsurf indexes the workspace; ask Cascade to explain or reuse modules from the repo.
How to install crawl4ai in ClineVS Code autonomous agent
Clone the repository
bashgit clone https://github.com/unclecode/crawl4ai.gitOpen in your AI editor
Open the folder in your assistant and ask it to index the codebase, then reference files in chat.
How to install crawl4ai in VS CodeCopilot / MCP support
Clone the repository
bashgit clone https://github.com/unclecode/crawl4ai.gitOpen in your AI editor
Open the folder in your assistant and ask it to index the codebase, then reference files in chat.
Documentation
Full README🚀🤖 Crawl4AI: the open-source web crawler for LLMs and AI agents
Latest: [v0.9.5](https://github.com/unclecode/crawl4ai/releases/tag/v0.9.5) (14 Oct 2026) · all releases →
Crawl4AI turns any website into clean, LLM-ready Markdown for RAG, AI agents and data pipelines. Run the open-source web crawler and scraper yourself, free forever, or use it hosted with one key: /scrape a page to Markdown, /extract it to JSON, /search the web, /serp for Google's results page as data, /answer a question with sources; MCP for your agent. Free: 1,000 credits every month, 10 a minute, 2 at a time. Paid: 120 a minute, 10 at a time, from $10 a month.
Two ways to use Crawl4AI
🐍 Run it yourself: open source, forever
pip install -U crawl4ai
crawl4ai-setup # installs the browser, onceimport asyncio
from crawl4ai import AsyncWebCrawler
async def main():
async with AsyncWebCrawler() as crawler:
result = await crawler.arun(url="https://news.ycombinator.com")
print(result.markdown)
asyncio.run(main())Docker server, CLI and every option: Installation · docs.crawl4ai.com
☁️ Or use the cloud: no browsers, no proxies
- 
Verify your email and 1,000 free credits are yours every month. No card.
- Get any page as Markdown:
curl -s https://api.crawl4ai.com/scrape \
-H "Authorization: Bearer $CRAWL4AI_KEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://news.ycombinator.com"}' | jq -r .markdownThe same key works for /extract, /search, /serp, /answer and many URLs at once (/scrape/batch, /scrape/jobs). Pay as you go: live prices.
Excerpt — the full document is on GitHub.
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